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Updated Apr 8, 2026

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Definicije kiselina i baza: Arenijusova teorija

Kiseline i baze su svuda oko nas - od limuna... Show more

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# Definicije kiselina i baza

Uvod u kiseline i baze

Kiseline i baze su svuda oko nas. Limunov sok i sirće su kiseli, dok su sapun i
soda b

Šta su kiseline i baze po Arenijusu

Zamisli da si detektiv koji mora da prepozna kiseline i baze samo gledajući kako se ponašaju u vodi. Arenijusova teorija ti daje jednostavne "otiske prstiju" za svaku grupu.

Kiseline su supstance koje se u vodi razlažu i oslobađaju vodоnikove jone (H⁺). Misli na njih kao na "davaoce vodonika" - kada stavimo HCl u vodu, on se raspada na H⁺ i Cl⁻ jonе.

Baze rade suprotno - one u vodi oslobađaju hidroksidne jone (OH⁻). NaOH se u vodi deli na Na⁺ i OH⁻ jone.

💡 Zapamti: Proces kada se jedinjenje deli na jone u vodi zove se elektrolitička disocijacija. To je kao kada se tim raspada na pojedinačne igrače!

# Definicije kiselina i baza

Uvod u kiseline i baze

Kiseline i baze su svuda oko nas. Limunov sok i sirće su kiseli, dok su sapun i
soda b

Kako kiseline funkcionišu

Sve Arenijusove kiseline rade po istom principu - kao mašine koje "izbacuju" H⁺ jone u vodu. Opšta formula je jednostavna: HA → H⁺ + A⁻.

Najvažnije jake kiseline koje trebaš da znaš:

  • Hlorovodonična (HCl) - imaš je u želucu: HCl → H⁺ + Cl⁻
  • Sumporna (H₂SO₄) - u akumulatorima: H₂SO₄ → 2H⁺ + SO₄²⁻
  • Azotna (HNO₃): HNO₃ → H⁺ + NO₃⁻

Primetićeš da sumporna kiselina daje dva H⁺ jona jer ima dva atoma vodonika u formuli. Upravo ti slobodni H⁺ joni čine da kiseline imaju kiseo ukus i menjaju lakmus u crveno.

💡 Trik za prepoznavanje: Ako formula počinje sa H, verovatno je kiselina!

# Definicije kiselina i baza

Uvod u kiseline i baze

Kiseline i baze su svuda oko nas. Limunov sok i sirće su kiseli, dok su sapun i
soda b

Kako baze funkcionišu

Arenijusove baze su "fabrike" za OH⁻ jone. Kad se rastopе u vodi, dele se prema formuli: MOH → M⁺ + OH⁻.

Ključne jake baze koje ćеš sresti na testovima:

  • Natrijum-hidroksid (NaOH) - "živa soda": NaOH → Na⁺ + OH⁻
  • Kalijum-hidroksid (KOH): KOH → K⁺ + OH⁻
  • Kalcijum-hidroksid Ca(OH)₂ - "gašeni kreč": Ca(OH)₂ → Ca²⁺ + 2OH⁻

Kod kalcijum-hidroksida imaš dva OH⁻ jona, pa kalcijum mora imati naelektrisanje 2+ da bi se sve izbalansiralo. OH⁻ joni daju bazama gorčinu i čine da se lakmus ofarba plavo.

💡 Prepoznavanje baza: Ako formula se završava sa OH, to je Arenijusova baza!

# Definicije kiselina i baza

Uvod u kiseline i baze

Kiseline i baze su svuda oko nas. Limunov sok i sirće su kiseli, dok su sapun i
soda b

Primeri i rešavanje zadataka

Evo kako da rešavaš tipične zadatke korak po korak. Fosforna kiselina (H₃PO₄) ima tri H atoma, što znači da će dati tri H⁺ jona: H₃PO₄ → 3H⁺ + PO₄³⁻.

Amonijak (NH₃) je zanimljiv slučaj - jeste baza, ali nije Arenijusova baza! Nema OH grupu u formuli, pa ne može da je "izbaci" u vodi. Ovo je jedno od ograničenja ove teorije.

Kada balansiraš jednačine, uvek proveri naelektrisanja. Za Ca(OH)₂ → Ca²⁺ + 2OH⁻: levo imaš 0, desno (+2) + 2(-1) = 0 ✓

Zapamti da H⁺ jon u stvarnosti ne postoji sam - vezuje se za vodu i pravi hidronijum jon (H₃O⁺), ali za tvoj nivo je dovoljno da koristiš H⁺.

💡 Test trik: Arenijusova teorija važi samo u vodi! Bez vode, nema disocijacije na jone.

# Definicije kiselina i baza

Uvod u kiseline i baze

Kiseline i baze su svuda oko nas. Limunov sok i sirće su kiseli, dok su sapun i
soda b

Pregled i priprema za test

Da bi savladao ovu oblast, fokusiraj se na prepoznavanje i pisanje jednačina. Kiseline uvek daju H⁺, baze uvek daju OH⁻ - jednostavno!

Ključne jednačine za učење:

  • HCl → H⁺ + Cl⁻ (jedna od najčešćih na testovima)
  • H₂SO₄ → 2H⁺ + SO₄²⁻ (pazi na dvojku!)
  • NaOH → Na⁺ + OH⁻
  • Ca(OH)₂ → Ca²⁺ + 2OH⁻

Strategija za test: Prvo pogledaj formulu - počinje li sa H (kiselina) ili se završava sa OH (baza)? Zatim napiši disocijaciju i proveri da li se naelektrisanja slažu.

💡 Za odličan: Elektrolitička disocijacija je proces deljenja na jone, elektroliti su supstance koje provode struju jer se dele na jone. Ovi pojmovi često "kače" na testovima!



We thought you’d never ask...

What is the Knowunity AI companion?

Our AI Companion is a student-focused AI tool that offers more than just answers. Built on millions of Knowunity resources, it provides relevant information, personalised study plans, quizzes, and content directly in the chat, adapting to your individual learning journey.

Where can I download the Knowunity app?

You can download the app from Google Play Store and Apple App Store.

Is Knowunity really free of charge?

That's right! Enjoy free access to study content, connect with fellow students, and get instant help – all at your fingertips.

Most popular content

Can't find what you're looking for? Explore other subjects.

Students love us — and so will you.

4.6/5

App Store

4.7/5

Google Play

The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.

Stefan S

iOS user

This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.

Samantha Klich

Android user

Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.

Anna

iOS user

Best app on earth! no words because it’s too good

Thomas R

iOS user

Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.

Basil

Android user

This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.

David K

iOS user

The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!

Sudenaz Ocak

Android user

In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.

Greenlight Bonnie

Android user

very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.

Rohan U

Android user

I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.

Xander S

iOS user

THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE Knowunity AI. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮

Elisha

iOS user

This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now

Paul T

iOS user

The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.

Stefan S

iOS user

This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.

Samantha Klich

Android user

Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.

Anna

iOS user

Best app on earth! no words because it’s too good

Thomas R

iOS user

Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.

Basil

Android user

This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.

David K

iOS user

The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!

Sudenaz Ocak

Android user

In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.

Greenlight Bonnie

Android user

very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.

Rohan U

Android user

I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.

Xander S

iOS user

THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE Knowunity AI. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮

Elisha

iOS user

This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now

Paul T

iOS user

 

Hemija

344

Updated Apr 8, 2026

5 pages

Definicije kiselina i baza: Arenijusova teorija

Kiseline i baze su svuda oko nas - od limuna koji jedemo do sapuna kojim se umivamo. Da biste razumeli kako ove supstance funkcionišu, potrebno je da savladate Arenijusovu teoriju, koja objašnjava njihovo ponašanje u vodi.

# Definicije kiselina i baza

Uvod u kiseline i baze

Kiseline i baze su svuda oko nas. Limunov sok i sirće su kiseli, dok su sapun i
soda b

Sign up to see the contentIt's free!

Access to all documents

Improve your grades

Join milions of students

Šta su kiseline i baze po Arenijusu

Zamisli da si detektiv koji mora da prepozna kiseline i baze samo gledajući kako se ponašaju u vodi. Arenijusova teorija ti daje jednostavne "otiske prstiju" za svaku grupu.

Kiseline su supstance koje se u vodi razlažu i oslobađaju vodоnikove jone (H⁺). Misli na njih kao na "davaoce vodonika" - kada stavimo HCl u vodu, on se raspada na H⁺ i Cl⁻ jonе.

Baze rade suprotno - one u vodi oslobađaju hidroksidne jone (OH⁻). NaOH se u vodi deli na Na⁺ i OH⁻ jone.

💡 Zapamti: Proces kada se jedinjenje deli na jone u vodi zove se elektrolitička disocijacija. To je kao kada se tim raspada na pojedinačne igrače!

# Definicije kiselina i baza

Uvod u kiseline i baze

Kiseline i baze su svuda oko nas. Limunov sok i sirće su kiseli, dok su sapun i
soda b

Sign up to see the contentIt's free!

Access to all documents

Improve your grades

Join milions of students

Kako kiseline funkcionišu

Sve Arenijusove kiseline rade po istom principu - kao mašine koje "izbacuju" H⁺ jone u vodu. Opšta formula je jednostavna: HA → H⁺ + A⁻.

Najvažnije jake kiseline koje trebaš da znaš:

  • Hlorovodonična (HCl) - imaš je u želucu: HCl → H⁺ + Cl⁻
  • Sumporna (H₂SO₄) - u akumulatorima: H₂SO₄ → 2H⁺ + SO₄²⁻
  • Azotna (HNO₃): HNO₃ → H⁺ + NO₃⁻

Primetićeš da sumporna kiselina daje dva H⁺ jona jer ima dva atoma vodonika u formuli. Upravo ti slobodni H⁺ joni čine da kiseline imaju kiseo ukus i menjaju lakmus u crveno.

💡 Trik za prepoznavanje: Ako formula počinje sa H, verovatno je kiselina!

# Definicije kiselina i baza

Uvod u kiseline i baze

Kiseline i baze su svuda oko nas. Limunov sok i sirće su kiseli, dok su sapun i
soda b

Sign up to see the contentIt's free!

Access to all documents

Improve your grades

Join milions of students

Kako baze funkcionišu

Arenijusove baze su "fabrike" za OH⁻ jone. Kad se rastopе u vodi, dele se prema formuli: MOH → M⁺ + OH⁻.

Ključne jake baze koje ćеš sresti na testovima:

  • Natrijum-hidroksid (NaOH) - "živa soda": NaOH → Na⁺ + OH⁻
  • Kalijum-hidroksid (KOH): KOH → K⁺ + OH⁻
  • Kalcijum-hidroksid Ca(OH)₂ - "gašeni kreč": Ca(OH)₂ → Ca²⁺ + 2OH⁻

Kod kalcijum-hidroksida imaš dva OH⁻ jona, pa kalcijum mora imati naelektrisanje 2+ da bi se sve izbalansiralo. OH⁻ joni daju bazama gorčinu i čine da se lakmus ofarba plavo.

💡 Prepoznavanje baza: Ako formula se završava sa OH, to je Arenijusova baza!

# Definicije kiselina i baza

Uvod u kiseline i baze

Kiseline i baze su svuda oko nas. Limunov sok i sirće su kiseli, dok su sapun i
soda b

Sign up to see the contentIt's free!

Access to all documents

Improve your grades

Join milions of students

Primeri i rešavanje zadataka

Evo kako da rešavaš tipične zadatke korak po korak. Fosforna kiselina (H₃PO₄) ima tri H atoma, što znači da će dati tri H⁺ jona: H₃PO₄ → 3H⁺ + PO₄³⁻.

Amonijak (NH₃) je zanimljiv slučaj - jeste baza, ali nije Arenijusova baza! Nema OH grupu u formuli, pa ne može da je "izbaci" u vodi. Ovo je jedno od ograničenja ove teorije.

Kada balansiraš jednačine, uvek proveri naelektrisanja. Za Ca(OH)₂ → Ca²⁺ + 2OH⁻: levo imaš 0, desno (+2) + 2(-1) = 0 ✓

Zapamti da H⁺ jon u stvarnosti ne postoji sam - vezuje se za vodu i pravi hidronijum jon (H₃O⁺), ali za tvoj nivo je dovoljno da koristiš H⁺.

💡 Test trik: Arenijusova teorija važi samo u vodi! Bez vode, nema disocijacije na jone.

# Definicije kiselina i baza

Uvod u kiseline i baze

Kiseline i baze su svuda oko nas. Limunov sok i sirće su kiseli, dok su sapun i
soda b

Sign up to see the contentIt's free!

Access to all documents

Improve your grades

Join milions of students

Pregled i priprema za test

Da bi savladao ovu oblast, fokusiraj se na prepoznavanje i pisanje jednačina. Kiseline uvek daju H⁺, baze uvek daju OH⁻ - jednostavno!

Ključne jednačine za učење:

  • HCl → H⁺ + Cl⁻ (jedna od najčešćih na testovima)
  • H₂SO₄ → 2H⁺ + SO₄²⁻ (pazi na dvojku!)
  • NaOH → Na⁺ + OH⁻
  • Ca(OH)₂ → Ca²⁺ + 2OH⁻

Strategija za test: Prvo pogledaj formulu - počinje li sa H (kiselina) ili se završava sa OH (baza)? Zatim napiši disocijaciju i proveri da li se naelektrisanja slažu.

💡 Za odličan: Elektrolitička disocijacija je proces deljenja na jone, elektroliti su supstance koje provode struju jer se dele na jone. Ovi pojmovi često "kače" na testovima!

We thought you’d never ask...

What is the Knowunity AI companion?

Our AI Companion is a student-focused AI tool that offers more than just answers. Built on millions of Knowunity resources, it provides relevant information, personalised study plans, quizzes, and content directly in the chat, adapting to your individual learning journey.

Where can I download the Knowunity app?

You can download the app from Google Play Store and Apple App Store.

Is Knowunity really free of charge?

That's right! Enjoy free access to study content, connect with fellow students, and get instant help – all at your fingertips.

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Transform this note into: ✓ 50+ Practice Questions ✓ Interactive Flashcards ✓ Full Mock Exam ✓ Essay Outlines

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Most popular content

Can't find what you're looking for? Explore other subjects.

Students love us — and so will you.

4.6/5

App Store

4.7/5

Google Play

The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.

Stefan S

iOS user

This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.

Samantha Klich

Android user

Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.

Anna

iOS user

Best app on earth! no words because it’s too good

Thomas R

iOS user

Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.

Basil

Android user

This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.

David K

iOS user

The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!

Sudenaz Ocak

Android user

In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.

Greenlight Bonnie

Android user

very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.

Rohan U

Android user

I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.

Xander S

iOS user

THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE Knowunity AI. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮

Elisha

iOS user

This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now

Paul T

iOS user

The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.

Stefan S

iOS user

This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.

Samantha Klich

Android user

Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.

Anna

iOS user

Best app on earth! no words because it’s too good

Thomas R

iOS user

Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.

Basil

Android user

This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.

David K

iOS user

The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!

Sudenaz Ocak

Android user

In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.

Greenlight Bonnie

Android user

very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.

Rohan U

Android user

I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.

Xander S

iOS user

THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE Knowunity AI. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮

Elisha

iOS user

This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now

Paul T

iOS user